diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 369eb24..16926a5 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -3538,9 +3538,9 @@
     scripts/config.py unset MBEDTLS_AESNI_C
     msg "AES tests, plain C"
     make clean
-    make test programs/test/selftest CC=gcc CFLAGS='-O2 -Werror'
+    make test programs/test/selftest CC=x86_64-linux-gnu-gcc-10 CFLAGS='-O2 -Werror'
     # check that there is no AESNI code present
-    ./programs/test/selftest | grep -qv "AESNI code" || false "AESNI code built when MBEDTLS_AESNI_C unset"
+    ! ( ./programs/test/selftest | grep -q "AESNI code") || false "AESNI code built when MBEDTLS_AESNI_C unset"
 }
 
 component_test_aes_only_128_bit_keys () {